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Showing 1 to 20 of 29 for “"COMBINING ABILITY"”.
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Selection Response, Genetic Variation, and Combining Ability of High Oil Maize Genotypes
… Yield. The study showed significant genetic variability estimates were available for grain weight plant -1 in AEC6S3 lines and for grain yield in AEC6S2 x LH185 testcrosses. Due to significant negative genotypic correlation between oil concentration and grain weight plant -1 in AEC6 lines, …
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Combining ability for yeild of imidazolinone resistant maize inbred lines under artificial and natural striga infestation
… the study showed differences in both General Combining Ability (GCA) and Specific Combining Ability (SCA) effects for grain yield. GCA effects ranged from -0.57 to 0.78. SCA effects were different within each tester. The SCA effects with tester A, ranged from - 0.67 to 0.58, with tester B from …
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Combining ability, protein, heterosis, and prediction of F₁ performance with RFLPs in a diallel of maize
… first study, diallel analyses were used to study combining ability and types of gene action important in the inheritance of protein content, grain yield, grain moisture at harvest, time to silk, kernel hardness, and density. General combining ability (GCA) and specific combining ability (SCA) …
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Combining Ability for Ear Prolificacy and Response of Prolific Maize (Zea May L.) Hybrids to Low Nitrogen Stress
… cultivars for low N tolerance locally. The combining ability approach can be used as a tool for breeding desirable cultivars. In order to improve grain yield in maize, it is important to consider ear prolificacy which is a major yield component. Therefore this study was designed to estimate …
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Combining ability study for the development of resistance to Aflation contamination by Aspergillus flavus link ex fries in groundnuts
… ranged from log(10) 4.11 to 4.78 cfu g-1 soil. Combining ability estimates of the parents for aflatoxin contamination registered significant (P<0.05) negative GCA effects for 55-437(-0.77), Ah 7223 (-1.46) and Katete (-1.95), while specific combining ability effects (SCA) of the crosses for the …
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Combining ability study for the development of resistance to Aflation contamination by Aspergillus flavus link ex fries in groundnuts
… ranged from log(10) 4.11 to 4.78 cfu g-1 soil. Combining ability estimates of the parents for aflatoxin contamination registered significant (P<0.05) negative GCA effects for 55-437(-0.77), Ah 7223 (-1.46) and Katete (-1.95), while specific combining ability effects (SCA) of the crosses for the …
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Barley Yellow Dwarf of Winter Wheat: Effects on Germplasm, and Inheritance, Combining Ability, and Reciprocal Effect for Tolerance to the Barley Yellow Dwarf Virus
… outstanding tolerance, though genetic variability for tolerance to the virus exists and seems to be quantitatively inherited. Heritability of tolerance is low under both fall and spring infection, but is higher under fall than spring inoculation. An interaction of entries with time of …
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PARENT SELECTION IN TOMATO BASED ON MORPHO-PHYSIOLOGICAL TRAITS
… selected morpho-physiological traits and general combining ability for yield in determinate and indeterminate tomato inbred lines, to determine if a relationship exists between these traits and the average probability that an inbred can produce transgressive segregates, and to determine if the …
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Experimental designs for population hybridization studies
… was to obtain information about (i) the general combining ability of populations, (ii) the specific combining ability of population crosses, (iii) the general combining ability of individuals, and (iv) the specific combining ability of individual crosses. These concepts were first introduced by …
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A genetic study of resistance to kernel infection by Aspergillus flavus in maize (Zea mays L.)
… parents contained the leafy gene (Lfy). From the combining ability analysis of the five maize parents and their 20 F1s, highly significant general combining ability (GCA), specific combining ability (SCA), and reciprocal effects were found. The analysis of genetic effects showed that the parents …
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ΣΧΕΣΗ ΕΤΕΡΟΖΥΓΩΤΙΑΣ ΙΣΟΕΝΖΥΜΙΚΩΝ ΓΟΝΙΔΙΑΚΩΝ ΘΕΣΕΩΝ ΚΑΙ ΕΤΕΡΩΣΗΣ ΣΕ ΖΕΥΓΗ ΚΑΘΑΡΩΝ ΣΕΙΡΩΝ ΑΡΑΒΟΣΙΤΟΥ (ZEA MAYS L.) ΔΙΑΦΟΡΕΤΙΚΗΣ ΓΕΝΕΑΛΟΓΙΚΗΣ ΠΡΟΕΛΕΥΣΗΣ
… LOCI ARE OF LIMITED USEFULNESS IN PREDICTING COMBINING ABILITY IN MAIZE.
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Agronomic evaluation of four maize synthetics after recurrent selection for yield and evaluation of selected lines from the synthetics
… compared with recurrent selection for general combining ability in BS13(S(,2)), and half-sib selection in the intervarietal cross, BS6(RS). The original and improved populations and population crosses, and crosses among selected lines derived from the improved populations were grown at four …
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Diallel analysis of diplopodia ear rot resistance in maize and an assessment of the genetic variability of Stenocarpella maydis through isozyme analysis
… DER resistance, and examining the genetic variability of the fungus from isolates collected from the U.S. and the Republic of South Africa. DER developed in maize following inoculations with a spore suspension prior to flowering in both greenhouse and field evaluations. A spore suspension gave …
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Genetics underlying flaking grit yield from dry milled maize grain
… corn dry basis. Narrow and broad sense heritability estimates for FGY were 0.53 and 0.65, respectively, indicating the importance of additive gene action for this trait. The general combining ability (GCA) variance for FGY was twice the size of the specific combining ability variance, …
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Derivation, fertility and breeding value of doubled monoploids from the diploid potato species, Solanum phureja
… doubled monoploids exhibited superior general combining ability over the anther donor under field conditions. This demonstrates the potential of passage of a heterozygous genotype through the monoploid sieve. The advantage of the monoploid sieve may be more or less evident depending on the …
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Inheritance of Weevil Resistance in Maize
… analysis method 2 assuming fixed effects. Heritability and relative dominance estimates were made under random effects model. General combining ability(GCA) and specific combining ability(SCA)effects were significant for number of insects and weight loss at both infestation periods. At 63 days …
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Inheritance of Weevil Resistance in Maize
… analysis method 2 assuming fixed effects. Heritability and relative dominance estimates were made under random effects model. General combining ability(GCA) and specific combining ability(SCA)effects were significant for number of insects and weight loss at both infestation periods. At 63 days …
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Three studies in marker-assisted plant breeding
… and their parents with outstanding general combining ability for yield by genomic best linear unbiased prediction. We also find that parental genetic distance is negatively correlated with mid-parent heterosis and performance of progeny for most traits, including yield, in the population of …
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Characterization and potential for the genetic improvement of pigeonpea (cajanus cajan ) landraces
… and (iv) determine the general and specific combining abilities for agronomic attributes among pigeonpea landraces. For the first objective of the study, the genetic variation for agronomic and morphological traits among fourteen pigeonpea landraces from the germplasm pool maintained at the …
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A diallel study of stalk rot resistance in elite maize and its interaction with yield
… following inoculation. Analyses of variance and combining ability analyses were performed on stalk rot scores and grain yield. There were no significant differences between the two pathogens for mean stalk rot score, but both were significantly higher in score than the control. Differences among …
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